Refractive shift in the position of the pulsar PSR B0329+54, measured at 111, 610, and 2300 MHz


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The results of an analysis of timing data for the pulsar PSR B0329+54 obtained in 1968–2012 on the Large Scanning Antenna of the Pushchino Radio Astronomy Observatory at 111 MHz, the 64 m DSS-14 telescope of the Jet Propulsion Laboratory at 2.3 GHz, and the 64 m telescope of the Kalyazin Radio Astronomy Observatory at 610 MHz are presented. The astrometric and spin parameters of the pulsar are derived at a new epoch. The coordinates of the pulsar and its proper motion measured at the three frequencies differ. These differences have a systematic character, and are interpreted as a secular, refractive shift in the apparent position of the pulsar that arises because it is observed through large-scale inhomogeneities of the interstellar medium, leading to variations in the angle of refraction.

Sobre autores

A. Rodin

Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute

Email: starovoyt.prao@gmail.com
Rússia, Pushchino, Moscow oblast

E. Starovoit

Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute; Pushchino State Natural Sciences Institute

Autor responsável pela correspondência
Email: starovoyt.prao@gmail.com
Rússia, Pushchino, Moscow oblast; Pushchino, Moscow oblast

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Declaração de direitos autorais © Pleiades Publishing, Ltd., 2017